Observations on infective drug resistance in Britain.
D000818:Animals; D002417:Cattle; D004352:Drug Resistance, Microbial; D004926:Escherichia coli / Q000187:drug effects*; D006801:Humans; D066298:In Vitro Techniques; D011200:Poultry; D012475:Salmonella / Q000187:drug effects*; D013552:Swine